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We study the use of polymer gratings as light couplers into porous silicon planar waveguides for sensing applications. Experimental evidence of a guided mode in a grating-coupled porous silicon structure is presented, along with a study of its detuning due to waveguide infiltration with a chemical linker. All the measurements are in good agreement with simulations obtained by means of a Fourier modal method, where the porous silicon birefringence is considered. These results demonstrate that this system is potentially useful for chemical and biological sensing applications.
Published in:
Journal of Applied Physics
(Volume:104
,
Issue:
12
)
Date of Publication: Dec 2008
- Page(s):
- 123113 - 123113-5
- ISSN :
- 0021-8979
- Digital Object Identifier :
- 10.1063/1.3043579
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 18 June 2009
- Issue Date :
- Dec 2008
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